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Cannot Open Backing Device

Time to initialize the beast. You can follow any responses to this entry through the RSS 2.0 feed. gmail ! Integrating DRBD with Pacemaker clusters Pacemaker primer Adding a DRBD-backed service to the cluster configuration Using resource-level fencing in Pacemaker clusters Using stacked DRBD resources in Pacemaker clusters Adding off-site disaster weblink

Register now! the rollback to plain disk template works without problems but it would be great if there where no orphan lvs. Working with DRBD 6. This is fresh RHEL 5.6 installation, the partition layout is almost default (I've just added a few logical volumes). # r0.res global { usage-count yes; } common { protocol C; }

Click Here to receive this Complete Guide absolutely free. If you don't do it this way heartbeat will fail to read the DRBD configuration, because it does not know how to include something.After finishing configuration, either copy the (configured) files Currently it's the (manually) merged content of the two files, which will NOT include the other files, so all configuration is done in drbd.conf. Best Regards, Mati [Attachment #5 (text/html)] Hello DRBD Users,

I have a problem configuring DRBD.

They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own. Ideas, requests, problems regarding TWiki? Powered by Blogger. For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration.

Mikrotik IPSec VPNs with multiple destination Networks/Policies and SA(s) management. Configuring SELinux ► 2012 (3) ► October (3) ► 2011 (20) ► October (4) ► July (14) ► May (2) About Me Windows & Linux View my complete profile Awesome Inc. initializing activity log NOT initialized bitmap New drbd meta data block successfully created. *[root at app1 drbd.d]# drbdadm attach r0* 0: Failure: (104) Can not open backing device. other According the manual I use the following commands: * [[email protected] drbd.d]# drbdadm create-md r0* md_offset 8480256000 al_offset 8480223232 bm_offset 8479961088 Found LVM2 physical volume signature 8257536 kB data area apparently used

Please provide the output of "gnt- cluster --version", "gnt-cluster version", and "hspace --version". That helped. Failure: command execution error: Can't create block device backend=, metadev=, visible as /dev/disk/0, size=1024m)> on node vserver12 for instance instance1: Can't assemble device Problem solved.

This is a brand new installation. http://marc.info/?l=drbd-user&m=130129809818506 Big partitions in Linux (> 2TB). authkeys can be left as is, ha.cf mainly adapt ip-address and node-names. template.

Common administrative tasks Checking DRBD status Retrieving status with drbd-overview Status information in /proc/drbd Connection states Resource roles Disk states Enabling and disabling resources Enabling resources Disabling resources Reconfiguring resources Promoting have a peek at these guys I tried to use LV as well (configuration shown below) > with the same effect. > What do you mean by "You may have blasted your LV signatures"? DRBD refers to block devices designed as a building block to form high availability (HA) clusters. LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Red Hat [SOLVED] failed to start drbd on centos 5.7 User Name Remember Me?

I believe you either want to get rid of LVM here, or use an LV as a backing device (instead of sda2). Note: drbd.conf originally included just global_common.conf and resources.res. Wed Aug 20 18:01:40 2014 Initializing DRBD devices... check over here Wed Aug 20 18:02:05 2014 * Verifying group 'default' Wed Aug 20 18:02:05 2014 * Gathering data (2 nodes) Wed Aug 20 18:02:08 2014 * Gathering disk information (2 nodes) Wed

Building, installing and configuring DRBD 3. Software version: 2.11.3 Internode protocol: 2110000 Configuration format: 2110000 OS api version: 20 Export interface: 0 VCS version: (ganeti) version v2.11.3 What distribution are you using? Introduction to DRBD 1.

Do you want to proceed? [need to type 'yes' to confirm] yes Writing meta data...

i build a openfiler test lab based on 2 nodes now ith 3 Disks x 2TB each with RAID 5 and ill extend this array to 12 Disks on each node. Disk /dev/sdb: 3978.5 GB, 3978502865408 bytes 255 heads, 63 sectors/track, 483692 cylinders, total 7770513409 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / Template images by molotovcoketail. ubuntu 14.04 What steps will reproduce the problem?

Changes after installation are done via the crm command, but don't forget to copy the resulting cib.xml file back to the fai server for a reinstallation. By continue using this website (scrolling page or clicking buttons or links) we'll assume you're ok with this. I would suggest you to create a new one (about 500MB) using fdisk, without mounting it. this content You may have blasted your LV signatures?

There's no need to wait until syncronisation has finished, you can immediately format (mkfs.ext4 /dev/drbd0) and use the filesystems... After the Installation and the first boot you will realize, that drbd and hartbeat will fail. My configuration is: *DRBD* ------------------------------------------------------- # drbd.conf include "drbd.d/global_common.conf"; include "drbd.d/*.res"; ------------------------------------------------------- ------------------------------------------------------- # r0.res global { usage-count yes; } common { protocol C; } resource r0 { on app1 { Visit the following links: Site Howto | Site FAQ | Sitemap | Register Now If you have any problems with the registration process or your account login, please contact us.

maybe it is a good idea to run "lvchange -an" for each lv to detect if its open _before_ creating any new lvs? As soon as you have the keys you can start the configuration. After this, you should have a block device named /dev/foo/bar on either node. Optimizing DRBD performance 15.

cp -p /srv/fai/config/files/etc/drbd.conf/drbd.sample /srv/fai/config/files/etc/drbd.conf/node1). success root:~# drbdadm up r0 Do this for all resouces on all nodes. You are currently viewing LQ as a guest. After you change the other parameters as needed (the sample is configured for two drbd-filesystems(Resource r0, device drbd0 (from file drbd-config!) (ext4 mounted on /mnt/home/commonname) and drbd1 (ext4 mounted on /mnt/scratch),

DRBD Internals DRBD meta data Internal meta data External meta data Estimating meta data size Generation Identifiers Data generations The generation identifier tuple How generation identifiers change How DRBD uses generation szboardstretcher Linux - Software 1 09-08-2011 12:19 PM DRBD + GFS2 on Centos 5.4 cman problem smbdie Linux - Server 1 07-13-2011 02:06 AM CentOS 5.5 Sendmail start failed zzycn Linux initializing activity log NOT initialized bitmap New drbd meta data block successfully created. *[[email protected] drbd.d]# drbdadm attach r0* 0: Failure: (104) Can not open backing device.

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